athlon64 bus speed

[luken8r]

im sure this has been discussed before, but its getting late and im doing this tomorrow

what would the bus speed and multiplier for a athlon64 3000+ be set to. Can I assume 200mhz x 15? its been a while since i built a machine and the last one i did has a locked multiplier, way back when on my ol celeron 500.

mobo = asus k8v

 

[Algere]

200 x 10 = 2GHz (2000MHz)

 

[Bar81]

Originally posted by: luken8r
im sure this has been discussed before, but its getting late and im doing this tomorrow

what would the bus speed and multiplier for a athlon64 3000+ be set to. Can I assume 200mhz x 15? its been a while since i built a machine and the last one i did has a locked multiplier, way back when on my ol celeron 500.

mobo = asus k8v

Remember that AMD mobos are rated and 3000+ does not imply a 3.0Ghz CPU, but rather (and this isn't entirely clear) that the CPU performs on par with a PIV 3.0Ghz CPU. Don't worry, it is better than a 3.0Ghz PIV, much better

I would recommend you pick up another mobo. It's had nothing but problems from leaking capacitors to DOA boards. If you want to overclock check out the new nForce 3 250 mobos with AGP/PCI lock; otherwise the ASRock (division of Asus) K8S8X.

 

[Shimmishim]

yeah...

will agree with the person above....

i had a 3200+ and it rocked!

but got rid of it... too muchpower for me!

 

[Jeff7181]

I'm surprised nobody has said the Athlon-64 doesn't have a FSB anymore That's only half true. The FSB, meaning the link between the CPU and the memory controller, still exists, it just exists inside the CPU core and operates at 1600 MHz (effectively). The 200 MHz that is multiplied to get the core clock speed is just a reference speed that doesn't mean much of anything anymore... it's coincidently the same speed as PC3200 RAM, but it's not derived from the speed of the RAM... so using PC2700 (166 Mhz) RAM won't cause your A64 3000+ to run at 1.67 GHz instead of it's normal 2.0 GHz. The CPU will continue to run at 2.0 GHz and your RAM will just run slower, at 166 MHz.

As far as what would be a good multiplier and bus speed... 200x10 (the default) would be good If you mean how far should you overclock it, that's up to you and your components. The new nForce3 250 and Via's new Pro chipset are much more overclocking friendly than their predecessors, so you can use higher bus speeds, which is the only way to overclock an Athlon-64 since the multiplier is locked just like your old 500 MHz Celeron.

So... nobody can give you a definite answer... overclocking is never guaranteed. You need to be able to figure that kinda stuff out on your own, else you shouldn't attempt it or you'll put your hardware at risk by doing so.

 

[Algere]

Originally posted by: Jeff7181
I'm surprised nobody has said the Athlon-64 doesn't have a FSB anymore That's only half true. The FSB, meaning the link between the CPU and the memory controller, still exists, it just exists inside the CPU core and operates at 1600 MHz (effectively). The 200 MHz that is multiplied to get the core clock speed is just a reference speed that doesn't mean much of anything anymore... it's coincidently the same speed as PC3200 RAM, but it's not derived from the speed of the RAM... so using PC2700 (166 Mhz) RAM won't cause your A64 3000+ to run at 1.67 GHz instead of it's normal 2.0 GHz. The CPU will continue to run at 2.0 GHz and your RAM will just run slower, at 166 MHz.

As far as what would be a good multiplier and bus speed... 200x10 (the default) would be good If you mean how far should you overclock it, that's up to you and your components. The new nForce3 250 and Via's new Pro chipset are much more overclocking friendly than their predecessors, so you can use higher bus speeds, which is the only way to overclock an Athlon-64 since the multiplier is locked just like your old 500 MHz Celeron.

So... nobody can give you a definite answer... overclocking is never guaranteed. You need to be able to figure that kinda stuff out on your own, else you shouldn't attempt it or you'll put your hardware at risk by doing so.

IIRC the memory controller runs @ the speed of the processor and the 1600MHz HyperTransport Bus is just the connection between the CPU and the chipset and/or devices. i.e hard drive.

 

[Jeff7181]

Originally posted by: Algere

Originally posted by: Jeff7181
I'm surprised nobody has said the Athlon-64 doesn't have a FSB anymore That's only half true. The FSB, meaning the link between the CPU and the memory controller, still exists, it just exists inside the CPU core and operates at 1600 MHz (effectively). The 200 MHz that is multiplied to get the core clock speed is just a reference speed that doesn't mean much of anything anymore... it's coincidently the same speed as PC3200 RAM, but it's not derived from the speed of the RAM... so using PC2700 (166 Mhz) RAM won't cause your A64 3000+ to run at 1.67 GHz instead of it's normal 2.0 GHz. The CPU will continue to run at 2.0 GHz and your RAM will just run slower, at 166 MHz.

As far as what would be a good multiplier and bus speed... 200x10 (the default) would be good If you mean how far should you overclock it, that's up to you and your components. The new nForce3 250 and Via's new Pro chipset are much more overclocking friendly than their predecessors, so you can use higher bus speeds, which is the only way to overclock an Athlon-64 since the multiplier is locked just like your old 500 MHz Celeron.

So... nobody can give you a definite answer... overclocking is never guaranteed. You need to be able to figure that kinda stuff out on your own, else you shouldn't attempt it or you'll put your hardware at risk by doing so.

IIRC the memory controller runs @ the speed of the processor and the 1600MHz HyperTransport Bus is just the connection between the CPU and the chipset and/or devices. i.e hard drive.

Hmmm... I thought the memory controller was connected to the rest of the core using a HT Tunnel... I could be wrong...